<template>
  <div id="app">
    <!-- 原始形式 使用 state -->
    <div>插值表达式：{{ $store.state.count }}</div>
    <div>计算属性：{{ count }}</div>
    <child-a></child-a>
    <child-b></child-b>
  </div>
</template>

<script>
import { mapState } from "vuex";
import ChildA from "./components/child-a";
import ChildB from "./components/child-b";

export default {
  name: "App",
  components: {
    ChildA,
    ChildB,
  },
  computed: {
    // count () {
    //   return this.$store.state.count
    // },
    ...mapState(["count"]),
  },
};
</script>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>
